Fastener receptacle



May 2o, 1947.

G, CANNOVA FASTENER RECEPTACLE `Filed Feb. 8, 1944 2 Sheets-Sheet 1 BY e fan/Mlm MX Mm@ May 20, 1947- G. cANNOvA 2,420,733

FASTEHIER` -RECEIPTACLE Filed Feb. 8, 1944 2 Sheets-Sheet 2 I N VEN TOR.

\ u filmmm HNNEYS Patented May 20, 1947 STATES Gamloc Fastener Cr'po acorporation of New Y0 c mutation stately s, itin, semina niet* claims. (ciisfs-z'zii Thif invfe'iition relates" to ai structurallyA and functionally improved fasteierj assembly and' in its" niore'sp'ecific aspects aims' tq'providea structliie" 0T this' Ilt'ui by 'means i 0f` Whdh tW rern..

bers-esten as mater'isti sheets-' may" bje' secured against movement and/or detachment with' respie'ctt' ea'ch other'.

It isan object of theinve'ntion to furnish a unit oifthis* typeand zWhich will include adetent structurincoriorating resiliency; it being uni necessary, `lfi'o'vi/ever, to overcome thev loading force'fcr' strain to which' the fastener parts are subjected `orderX to eiect an' operation of the detentl structure:

A further objectiis'VtHat-o'f povidiiiga fastener*v assembly Whicnwillinclude relativel'yfe'w and simplepartsg'heacn individually rugged in construction" andcapableof manufacture" by quan- Witn'theseiand trier objects in mind; refercificis had to thefattached sheets'of drawings illustrating'4 one' practical embodiment ofthe in.-

ventin'iarrdinwnicn: l

Figl 1 is a sectional side yiewtaken through 'g `rriem'bersL and especially' the stud rele? f 2 is a sectional plan vie-WV taken along vthe 1in "2-"-"-2"'and in2 the Vdirection of thearrows as indi ted in Figj 1, said parts being broken away;

Fig. 4f `is' ar 1V eicploded View Vof the stud; recepta;

cleafssmblyand'showin'g'the several parts of the samefin perspective.'

With primary` reference'to Figs. 1 and 3,-it

Willhbseen'thatfthe reference numerals V I [l and I I indicate`- mountingv members in the rform Y of sheets.'4 These' member's'va're formed with aper.. tu'reslllf4 andd l', respectively, and adjacent the aperture of sheet `I U, that mount-ing member may be, dinpicd or formed` with aniinwardlyand downwardly inclined' surface. Such construction l is preferable, in that a'proper bearing is furnished for the'fheadf'l3""ofastud which includes a snanlgportion I4.

Hav'ih'g'in mint'l that' the'presentl invention has primary reference to th'stud receptacley the" structur4 ofif thf' stud'A i has been? only generally illustrated. As shown, it includes, accordingito one aspect,- a shank formed with threadsand which latte arefinterrub'ted. According L to an.A other aspect, the shanl;A might bedenedfasconii prising af relatively thin and -attened-'Ibodyi the side' edges of which are threaded as indicated at I5, the threads preferably having a relatively steep helix angle, as shown in Fig. 1. In any event, it will be appreciated that the dimensions tity production methodsi such parts being 'capaveci 'readyassembTage and Whenso assembled l` the' aper rfef I1, A

site, sidsstrereot grooves: Also," tab portions lei age tiff siipih finara'tt'ertnat' they i ay inter- Slll that it ,t niet be dismal Alpen" its meer surface ottpartZI i andi the flange zmay, entend proj action?? 5 Jci'r'ivenifentlyforms an integral `.part

ih'eplate with rference te the rmi-` .A .espiral a Qilsiliti ,Sash ih .t the .SlflailllsofI the stud V may-j passtherethroughr Hqwever, the parts Shouldbefrsc shaed-fthat-.relative turning 1 (beyondavery minor degree) will be prevented.

lstik' inwardlyradiacent :the fserplieryion Oppo- F as indicated by the reference numealsl.- ,The Apair 0f: instruck portions'l thus .furnished cooperate with the grooves `2 3 so that "azdetenb yor locking, .structure iis furnished; the; Q IOjectionst normally; riding Withinv` the L 28jarestruk out of the plate and furnish resilient-tongues. These tabs conveniently have their free ends curved inwardly toward the surface of the plate as indicated at 29. Overlying the plate 24 and con- 60 Veniently resting upon the ange 22 is a sepa- Thereupon, the detent structure will again rator plate 30. This is formed with a central aperture 3|. In common with the part 2|, it has a conguration such that it may not rotate with respect to the casing I6. Also, it may be of larger dimensions than the part 2| in that the latter should, of course, be capable of certainv lateral movements in order that the parts may properly center and cooperate with each other.

Extending in turn above the plate 3i) is a convolute spring 32. As illustrated, the successive convolutions may be of increasing diameter and the ends of the spring may be reduced. This may be achieved by, for example, grinding. As a consequence of the convolutions being of different diameters, it follows that as the spring is compressed these convolutions will not engage each other. Rather, they will nest one within the other.

As previously brought out, this spring bears against the plate 310. Conveniently, there may be associated with the casing IS a plate 33., This plate is apertured in line with the opening I I' of the mountingmember and may be formed with a flange 34 defining such opening. This flange will assist in conning the spring. It is, of course, to be understood that the configuration of these several parts and especially the springs might be varied in numerous respects. The main factor to be borne in mind is that, by employing springs or their functional equivalents, separate load and detent factors are provided.

Thus, it will be understood that with the parts assembled in the manner shown in Figs. 1, 2 and 3 the operator may project the shank I4 of the stud to a point wherein the head I3 bears against the surface of sheet I0. In such projection the stud will pass through and be guided by the edges of aperture 26. Consequently, the threaded edge portions l5 of the stud will pass along the Zones 2U of the nut and Ythis stud will-with the parts proportioned as. shown-project beyond the casing I6 and the end of the nut, Thereupon, by simply turning this stud, threads I5 are caused to engage threads I9.` As a result of these threads having a relatively steep helix angle, such engagement will cause the nut I8 to be drawn upwardly along the shank I4, when viewed as in Fig. 1. This effect has-been illustrated in lFig. 3.

When the parts are inv this relation, the plate 24 is maintained in proper position by means of the detent structure. More particularly, the tongue or tab portions 28 press against the plate 30 and serve to retain the projections 21 within the grooves 23. When the stud is rotated from one position to another', the projections 2l leave one pair of radially aligned grooves 23, ride over the surface of plate 24, and come to rest in another pair o-f grooves 23. As the stud rotates, the plate 24 turns with it and preferably until the projections 2'! have travelled through a 90 arc.

become operative because the projecting portions 21 now extend into a different pair of the grooves 23. This maintains the stud in position. Obviously, upon its being desired to uncouple the stud from the nut by rotating the former in a reverse direction with respect to the latter, the plate 24 will again be indexed to its initial position. Movement beyond the proper points is, of course, prevented by the stop structure furnished by the-extension 25.

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Assuming that sheets |Il and are in face-t0- face contact and that the stud has been rotated to its fullest extent, the aforementioned upward movement of the nut I8 will, of course, cause plate 30 to be similarly moved. This will in turn cause the spring 32 to be compressed. If the sheets I9 and II or any equivalent mounting members tend to separate, it is, of course, apparent that the spring 32 will be compressed to a greater extent. However, regardless of the degree of such compression, it is apparent that it will not affect the intimacy of engagement of the detent parts. Rather, irrespective of conditions of load, the units of this assembly are caused to cooperate merely by the spring tongues 28 or their equivalents. Therefore, anv operator, in desiring to effect an uncoupling of the parts of the fastener, will not have to overcome the load on the spring 32 in order to eiect a release of ,the detent structure. Rather, the resistance to movement of the latter will at all times be substantially equal and. irrespective of varying load conditions.

Thus, it is obvious that among others the several objects of the invention as specically aforenoted are achieved. It will likewise be apparent that numerous changes in construction and rerrangements of the parts might be resorted to without departing from the spirit of the invention as defined by the claims.

I claim:

l. A stud receptacle-for a fastener assembly, said receptacle including a movably mounted member to be engaged and subjected to loading by a stud, a part extending from said member, a locking plate movably mounted upon said part and providing in cooperation therewith a detent structure to normally maintain said plate in a predetermined position with reference to said part, a flange extending from said part and enclosing said plate, and a loading spring so positioned relative to the flange as to act against said flange to yieldingly support said member.

2. A stud receptacle for a fastener assembly, said receptacle including a movably mounted member to be engaged and subjected to loading by a stud, a part extending from said member, a locking plate movably mounted upon said part and providing in cooperation therewith a detent structure to normally maintain said plate in a predetermined position with referenceto said part, a flange extending from said part and enclosing said plate, a loading spring so positioned relative to the ange as to act against said flange to yieldingly support said member, said iange beingA interrupted throughout a portion of its length, and a projection forming ya partvof said plate and engaging the end of said flange to provide a stop structure limiting the movements of said plate with respect to said member.

GEORGE CANNOVA.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,337,483 Marty i- Dec. 2l, 1943 2,374,679 Hallock May l, 1945 2,382,973 Cannova Aug. 2l, 1945 2,356,162 Johnson et al Aug. 22, 1944 

